A steel bridge bottom support adjustment assembly and construction method thereof

Abstract

The present invention relates to a steel bridge bottom support adjustment assembly and a construction method thereof, and belongs to the technical field of steel bridge construction. First, support columns A, support columns B and inter-column reinforcement supports are assembled together, and length adjustment devices A, length adjustment devices B and reinforcing connecting rods are installed at the same time, through support columns A and support columns B, and support columns A and support columns B are supported on a support foundation on the ground. Beneficial effect: The basic support of the first head beam part of the steel box bridge and the second head beam part of the steel box bridge unit is realized, and the adjustment support of the first head beam part of the steel box bridge and the second head beam part of the steel box bridge is realized by the length adjustment device A and the length adjustment device B, thereby improving the installation efficiency of the combined cable-stayed steel box bridge.

Description

Technical Field

[0001] The invention relates to a steel bridge bottom support adjustment assembly and a construction method thereof, belonging to the technical field of steel bridge construction. Background Art

[0002] Steel bridges are primarily constructed of steel. They offer high strength and stiffness, while reducing beam height and deadweight compared to concrete bridges. my country's rapidly accelerating urbanization is driving rapid development in multi-level transportation systems, particularly overpasses. In recent years, steel structures have become increasingly common in these structures. Steel bridges have gained widespread recognition for their short construction times, light weight, and superior quality.

[0003] The current technical considerations are not comprehensive and have the following disadvantages: the combined cable-stayed steel box bridge has the characteristics of large spanning capacity, beautiful appearance, and cantilever construction. The steel box girder part is 101 meters long and 51 meters wide. The steel box girder is divided into 96 blocks in the longitudinal and transverse directions. First, it is processed into blocks that are easy to transport and hoist in the processing plant. A 150T crawler crane is used on site to lift it to the bridge support system device. Therefore, the bridge support system device for the combined cable-stayed steel box bridge is an important civil engineering component. In the existing bridge support system devices for the combined cable-stayed steel box bridge, a beam-column structure is still used, and the elevation of the bracket is adjusted by a sand box. It is not convenient to perform overall unloading operations during construction, which affects the installation efficiency of the combined cable-stayed steel box bridge.

[0004] There is an urgent need for a steel bridge bottom support adjustment assembly and a construction method thereof, which realizes the basic support of the first head beam part and the second head beam part of the steel box bridge unit through the support column A and the support column B, and realizes the adjustment support of the first head beam part and the second head beam part of the steel box bridge through the length adjustment device A and the length adjustment device B, thereby improving the installation efficiency of the combined cable-stayed steel box bridge. Summary of the Invention

[0005] In order to solve one of the above problems, based on the deficiencies in the above existing technologies, the technical problem to be solved by the present invention is: how to realize the basic support of the first head beam part and the second head beam part of the steel box bridge unit through the support column A and the support column B, and realize the adjustment support of the first head beam part and the second head beam part of the steel box bridge by the length adjustment device A and the length adjustment device B, thereby improving the installation efficiency of the combined cable-stayed steel box bridge, and for this purpose, provide a steel bridge bottom support adjustment assembly and a construction method thereof.

[0006] The steel bridge bottom support adjustment assembly described in the present invention includes a plurality of groups of steel box bridge units assembled together, and the adjacent steel box bridge units are arranged, and the first head beam portion of the steel box bridge and the second head beam portion of the steel box bridge at their ends are butt-jointed. It is characterized in that a support column A for supporting the first head beam portion of the steel box bridge is arranged below the first head beam portion of the steel box bridge, and a support column B for supporting the second head beam portion of the steel box bridge is arranged below the second head beam portion of the steel box bridge. The bottom ends of the support column A and the support column B are both supported on a support foundation on the ground, and an inter-column reinforcement support is arranged between the support column A and the support column B, which are connected and reinforced through the inter-column reinforcement support. A length adjustment device A is arranged between the top of the support column A and the first head beam portion of the steel box bridge, and a length adjustment device B is arranged between the top of the support column B and the second head beam portion of the steel box bridge.

[0007] Through the support column A and the support column B, the basic support of the first head beam part and the second head beam part of the steel box bridge unit is realized. The length adjustment device A and the length adjustment device B are used to realize the adjustment support of the first head beam part and the second head beam part of the steel box bridge, thereby improving the installation efficiency of the combined cable-stayed steel box bridge.

[0008] Preferably, the inter-column reinforcement support includes a main diagonal tie rod with its ends hinged to the lower portion of support column A and the upper portion of support column B, respectively. A secondary diagonal tie rod A is hinged to the upper portion of support column A, and the other end of the secondary diagonal tie rod A is hinged to the end of the main diagonal tie rod near support column A. A secondary diagonal tie rod B is hinged to the lower portion of support column B, and the other end of the secondary diagonal tie rod B is hinged to the end of the main diagonal tie rod near support column B. Support columns A and B are reinforced.

[0009] Preferably, the main diagonal tie rod includes a connecting rod A hingedly connected to a support column A, a connecting rod B hingedly connected to a support column B, and a threaded tube A. One end of the connecting rod A is provided with a screw segment A threadedly connected to the threaded tube A, and one end of the connecting rod B is provided with a screw segment B threadedly connected to the other end of the threaded tube A. The threads of the screw segments A and B are threaded in opposite directions. The overall length of the main diagonal tie rod can be adjusted by rotating the threaded tube A.

[0010] Preferably, the secondary diagonal brace A comprises a tie rod A hingedly connected to the support column A, a tie rod B hingedly connected to the connecting rod A, and a threaded tube B. One end of the tie rod A is provided with a screw segment C threadedly connected to the threaded tube B. One end of the tie rod B is provided with a screw segment D threadedly connected to the other end of the threaded tube B. The threads of screw segment C and screw segment D are threaded in opposite directions. The overall length of the secondary diagonal brace A can be adjusted by rotating the threaded tube B.

[0011] Preferably, the auxiliary diagonal brace B includes a tie rod C hinged to the support column B, a tie rod D hinged to the connecting rod B, and a threaded tube C. One end of the tie rod C is provided with a screw segment E threadedly connected to the threaded tube C. One end of the tie rod D is provided with a screw segment F threadedly connected to the other end of the threaded tube C. The threads of the screw segments E and F are threaded in opposite directions. The overall length of the auxiliary diagonal brace B can be adjusted by rotating the threaded tube C.

[0012] Preferably, the support column A is a hollow tubular structure, and the length adjustment device A includes an annular base plate A fixed to the top of the support column A and coaxial with the support column A. The outer ring of the annular base plate A is connected to a support tube A, and the support tube A has a built-in liftable slide A. The lower surface of the slide A is provided with a plug A that slides in cooperation with the inner hole of the support column A. The upper surface of the slide A is provided with a lifting platform A for supporting the first head beam of the steel box bridge. A driving cylinder A for driving the slide A to rise and fall is provided on the outer wall of the support column A. The cylinder body of the driving cylinder A is fixed to the outer wall of the support column A, and the lifting rod of the driving cylinder A passes through the annular base plate A and is connected to the slide A. The extension and retraction of the driving cylinder A controls the slide A and the lifting platform A to adjust the lifting of the first head beam of the steel box bridge.

[0013] Preferably, the driving cylinders A are provided in multiple groups along the circumferential direction of the support column A and move synchronously.

[0014] Preferably, the support column B is a hollow tubular structure, and the length adjustment device B includes a ring-mounted base plate B fixed on the top of the support column B and coaxial with the support column B. The outer ring of the ring-mounted base plate B is connected to a support tube B, and the support tube B has a built-in liftable slide B. The lower surface of the slide B is provided with a plug B that slides with the inner hole of the support column B. The upper surface of the slide B is provided with a lifting platform B for supporting the second head beam of the steel box bridge. A driving cylinder B for driving the slide B to rise and fall is provided on the outer wall of the support column B. The cylinder body of the driving cylinder B is fixed on the outer wall of the support column B, and the lifting and retracting rod of the driving cylinder B passes through the ring-mounted base plate B and is connected with the slide B.

[0015] Preferably, the driving cylinder A and the driving cylinder B may be jacks.

[0016] Preferably, a reinforcing connecting rod is installed between the support tube A and the support tube B.

[0017] The present invention also discloses a construction method for a bottom support adjustment assembly of a steel bridge, which is characterized in that it includes the following steps: first, assembling the support column A, the support column B and the inter-column reinforcement support together, and simultaneously installing the length adjustment device A, the length adjustment device B and the reinforcing connecting rod, through the support column A and the support column B, and supporting the support column A and the support column B on a support foundation on the ground, thereby realizing the basic support of the first head beam part and the second head beam part of the steel box bridge of the steel box bridge unit, and realizing the adjustment support of the first head beam part and the second head beam part of the steel box bridge by the length adjustment device A and the length adjustment device B, thereby improving the installation efficiency of the combined cable-stayed steel box bridge.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The steel bridge bottom support adjustment assembly described in the present invention realizes the basic support for the first head beam part and the second head beam part of the steel box bridge unit through the support column A and the support column B, and realizes the adjustment support for the first head beam part and the second head beam part of the steel box bridge by the length adjustment device A and the length adjustment device B, thereby improving the installation efficiency of the combined cable-stayed steel box bridge.

[0020] The construction method of the steel bridge bottom support adjustment assembly described in the present invention includes the following steps: first, assembling the support column A, the support column B and the inter-column reinforcement support together, and simultaneously installing the length adjustment device A, the length adjustment device B and the reinforcing connecting rod. Through the support column A and the support column B, and supporting the support column A and the support column B on the support foundation on the ground, the basic support of the first head beam part of the steel box bridge and the second head beam part of the steel box bridge unit is realized. The length adjustment device A and the length adjustment device B realize the adjustment support of the first head beam part of the steel box bridge and the second head beam part of the steel box bridge, thereby improving the installation efficiency of the combined cable-stayed steel box bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the inter-column reinforcement support of the present invention;

[0024] Figure 3 This is an internal diagram of the length adjustment device A.

[0025] In the figure: 1. First head beam of steel box bridge 2. Second head beam of steel box bridge 3. Support column A 4. Support column B 5. Support foundation 6. Inter-column reinforcement support 6.1. Main diagonal tie rod 6.1.1 Connecting rod A 6.1.2 Threaded tube A 6.1.3 Connecting rod B 6.2. Secondary diagonal tie rod A 6.2.1 Tie rod A 6.2.2 Threaded tube B 6.2.3 Tie rod B 6.3. Secondary diagonal tie rod B 6.3.1 Tie rod C 6.3.2 Threaded tube C 6.3.3 Tie rod D 7. Length adjustment device A 8. Length adjustment device B 9. Reinforced connecting rod. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] The present invention is further illustrated below by means of specific examples, but is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0028] Example 1, as Figure 1-2 As shown, the bottom support adjustment assembly of a steel bridge includes a plurality of groups of steel box bridge monomers assembled together, and the adjacent steel box bridge monomers are arranged, and the first head beam portion 1 of the steel box bridge and the second head beam portion 2 of the steel box bridge at their ends are butt-jointed together. A support column A3 for supporting the first head beam portion 1 of the steel box bridge is arranged below the first head beam portion 1 of the steel box bridge, and a support column B4 for supporting the second head beam portion 2 of the steel box bridge is arranged below the second head beam portion 2 of the steel box bridge. The bottom ends of the support columns A3 and B4 are both supported on a support foundation 5 on the ground, and an inter-column reinforcement support 6 is arranged between the support column A3 and the support column B4, which are connected and reinforced by the inter-column reinforcement support 6. A length adjustment device A7 is arranged between the top of the support column A3 and the first head beam portion 1 of the steel box bridge, and a length adjustment device B8 is arranged between the top of the support column B4 and the second head beam portion 2 of the steel box bridge.

[0029] Through the support column A3 and the support column B4, the basic support of the first head beam 1 and the second head beam 2 of the steel box bridge unit is realized. The length adjustment device A7 and the length adjustment device B8 are used to realize the adjustment support of the first head beam 1 and the second head beam 2 of the steel box bridge, thereby improving the installation efficiency of the combined cable-stayed steel box bridge.

[0030] Example 2, as Figure 1-3As shown, the bottom support adjustment assembly of a steel bridge includes a plurality of groups of steel box bridge monomers assembled together, and the adjacent steel box bridge monomers are arranged, and the first head beam portion 1 of the steel box bridge and the second head beam portion 2 of the steel box bridge at their ends are butt-jointed together. A support column A3 for supporting the first head beam portion 1 of the steel box bridge is arranged below the first head beam portion 1 of the steel box bridge, and a support column B4 for supporting the second head beam portion 2 of the steel box bridge is arranged below the second head beam portion 2 of the steel box bridge. The bottom ends of the support columns A3 and B4 are both supported on a support foundation 5 on the ground, and an inter-column reinforcement support 6 is arranged between the support column A3 and the support column B4, which are connected and reinforced by the inter-column reinforcement support 6. A length adjustment device A7 is arranged between the top of the support column A3 and the first head beam portion 1 of the steel box bridge, and a length adjustment device B8 is arranged between the top of the support column B4 and the second head beam portion 2 of the steel box bridge.

[0031] Furthermore, the inter-column reinforcement support 6 includes a main diagonal rod 6.1 whose two ends are hinged to the lower part of the support column A3 and the upper part of the support column B4 respectively; the upper part of the support column A3 is hinged with a secondary diagonal rod A6.2.1, and the other end of the secondary diagonal rod A6.2.1 is hinged to the end of the main diagonal rod 6.1 close to the support column A3; the lower part of the support column B4 is hinged with a secondary diagonal rod B6.3, and the other end of the secondary diagonal rod B6.3 is hinged to the end of the main diagonal rod 6.1 close to the support column B4, thereby reinforcing the support columns A3 and B4.

[0032] Furthermore, the main diagonal brace 6.1 comprises a connecting rod A6.1.1 hinged to support column A3, a connecting rod B6.1.3 hinged to support column B4, and a threaded tube A6.1.2. One end of connecting rod A6.1.1 is provided with a screw segment A threadedly connected to threaded tube A6.1.2. One end of connecting rod B6.1.3 is provided with a screw segment B threadedly connected to the other end of threaded tube A6.1.2. The threads of screw segments A and B are threaded in opposite directions. The overall length of the main diagonal brace 6.1 can be adjusted by rotating threaded tube A6.1.2.

[0033] Furthermore, the secondary diagonal brace A6.2 comprises a tie rod A6.2.1 hinged to the support column A3, a tie rod B6.2.3 hinged to the connecting rod A6.1.1, and a threaded tube B6.2.2. One end of the tie rod A6.2.1 is provided with a screw segment C that is threadedly connected to the threaded tube B6.2.2. One end of the tie rod B6.2.3 is provided with a screw segment D that is threadedly connected to the other end of the threaded tube B6.2.2. The threads of screw segment C and screw segment D are threaded in opposite directions. The overall length of the secondary diagonal brace A6.2 can be adjusted by rotating the threaded tube B6.2.2.

[0034] Furthermore, the secondary diagonal brace B6.3 comprises a tie rod C6.3.1 hinged to the support column B4, a tie rod D6.3.3 hinged to the connecting rod B6.1.3, and a threaded tube C6.3.2. One end of tie rod C6.3.1 is provided with a screw segment E that is threadedly connected to the threaded tube C6.3.2. One end of tie rod D6.3.3 is provided with a screw segment F that is threadedly connected to the other end of the threaded tube C6.3.2. The threads of screw segments E and F are threaded in opposite directions. The overall length of the secondary diagonal brace B6.3 can be adjusted by rotating the threaded tube C6.3.2.

[0035] Furthermore, the support column A3 is a hollow tubular structure, and the length adjustment device A7 includes a ring-mounted base plate A7.1 fixed on the top of the support column A3 and coaxial with the support column A3. The outer ring of the ring-mounted base plate A7.1 is connected to a support tube A7.2, and the support tube A7.2 has a built-in liftable slide A7.3. The lower surface of the slide A7.3 is provided with a plug A7.5 that slides with the inner hole of the support column A3, and the upper surface of the slide A7.3 is provided with a lifting platform A7.4 for supporting the first head beam 1 of the steel box bridge. A driving cylinder A7.6 for driving the slide A7.3 to rise and fall is provided on the outer wall of the support column A3, and the cylinder body of the driving cylinder A7.6 is fixed on the outer wall of the support column A3, and the lifting and retracting rod of the driving cylinder A7.6 passes through the ring-mounted base plate A7.1 and is connected to the slide A7.3. The lifting and lowering of the first head beam 1 of the steel box bridge is adjusted by driving the telescopic control slide A7.3 and the lifting platform A7.4 of the oil cylinder A7.6.

[0036] Furthermore, the driving cylinders A7.6 are provided in multiple groups along the circumferential direction of the support column A3 and move synchronously.

[0037] Furthermore, the support column B4 is a hollow tubular structure, and the length adjustment device B8 includes a ring-mounted base plate B fixed on the top of the support column B and coaxial with the support column B4. The outer ring of the ring-mounted base plate B is connected to the support tube B, and the support tube B has a built-in liftable slide B. The lower surface of the slide B is provided with a plug B that slides with the inner hole of the support column B. The upper surface of the slide B is provided with a lifting platform B for supporting the second head beam 2 of the steel box bridge. The outer wall of the support column B is provided with a driving cylinder B for driving the slide B to rise and fall. The cylinder body of the driving cylinder B is fixed on the outer wall of the support column B4, and the lifting and retracting rod of the driving cylinder B passes through the ring-mounted base plate B and is connected with the slide B.

[0038] Furthermore, the driving cylinder A7.6 and the driving cylinder B may be jacks.

[0039] Furthermore, a reinforcing connecting rod 9 is installed between the support tube A7.2 and the support tube B.

[0040] Example 3, the construction method of the bottom support adjustment assembly of a steel bridge includes the following steps: first, assemble the support column A3, the support column B4 and the inter-column reinforcement support 6 together, and at the same time install the length adjustment device A7, the length adjustment device B8 and the reinforcement link 9, through the support column A3 and the support column B4, and support the support column A3 and the support column B4 on the support foundation 5 on the ground, thereby realizing the basic support of the first head beam 1 of the steel box bridge and the second head beam 2 of the steel box bridge of the steel box bridge unit, and realizing the adjustment support of the first head beam 1 of the steel box bridge and the second head beam 2 of the steel box bridge by the length adjustment device A7 and the length adjustment device B8, thereby improving the installation efficiency of the combined cable-stayed steel box bridge.

[0041] The steel bridge bottom support adjustment assembly described in the present invention realizes the basic support for the first head beam part and the second head beam part of the steel box bridge unit through the support column A and the support column B, and realizes the adjustment support for the first head beam part and the second head beam part of the steel box bridge by the length adjustment device A and the length adjustment device B, thereby improving the installation efficiency of the combined cable-stayed steel box bridge.

[0042] The construction method of the steel bridge bottom support adjustment assembly described in the present invention includes the following steps: first, assembling the support column A, the support column B and the inter-column reinforcement support together, and simultaneously installing the length adjustment device A, the length adjustment device B and the reinforcement link, through the support column A and the support column B, and supporting the support column A and the support column B on the support foundation on the ground, thereby realizing the basic support of the first head beam part of the steel box bridge and the second head beam part of the steel box bridge of the steel box bridge unit, and realizing the adjustment support of the first head beam part of the steel box bridge and the second head beam part of the steel box bridge by the length adjustment device A and the length adjustment device B, thereby improving the installation efficiency of the combined cable-stayed steel box bridge.

[0043] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

[0044] Any matters not described in detail in the present invention are well-known technologies to those skilled in the art.

Claims

1. A steel bridge bottom support and adjustment assembly, comprising a plurality of assembled steel box bridge units, wherein adjacent steel box bridge units are butted together at their ends with first and second head beams. The assembly is characterized in that: A support column A for supporting the first head beam of the steel box bridge is provided below the first head beam of the steel box bridge, and a support column B for supporting the second head beam of the steel box bridge is provided below the second head beam of the steel box bridge. The bottom ends of the support column A and the support column B are both supported on a support foundation on the ground. An inter-column reinforcement support is provided between the support column A and the support column B, and the connection and reinforcement are achieved through the inter-column reinforcement support. A length adjustment device A is provided between the top of the support column A and the first head beam of the steel box bridge, and a length adjustment device B is provided between the top of the support column B and the second head beam of the steel box bridge. The inter-column reinforcement support includes a main diagonal rod hinged at both ends to the lower part of the support column A and the upper part of the support column B respectively, and the upper part of the support column A is hinged to a secondary diagonal rod A, and the other end of the secondary diagonal rod A is hinged to the main diagonal rod near the support column One end of A, the lower part of the support column B is hinged with a secondary oblique rod B, and the other end of the secondary oblique rod B is hinged to the end of the main oblique rod close to the support column B. The main oblique rod includes a connecting rod A hinged with the support column A, a connecting rod B hinged with the support column B and a threaded tube A. One end of the connecting rod A is provided with a screw segment A threadedly connected to the threaded tube A, and one end of the connecting rod B is provided with a screw segment B threadedly connected to the other end of the threaded tube A, and the thread rotation directions of the screw segment A and the screw segment B are opposite. The secondary oblique rod A includes a pull rod A hinged with the support column A, a pull rod B hinged with the connecting rod A and a threaded tube B. One end of the pull rod A is provided with a screw segment C threadedly connected to the threaded tube B, and one end of the pull rod B is provided with a screw segment D threadedly connected to the other end of the threaded tube B, and the thread rotation directions of the screw segment C and the screw segment D are opposite.

2. The steel bridge bottom support adjustment assembly according to claim 1, characterized in that: The secondary inclined tie rod B includes a tie rod C hinged to the support column B, a tie rod D hinged to the connecting rod B, and a threaded tube C. One end of the tie rod C is provided with a screw segment E threadedly connected to the threaded tube C, and one end of the tie rod D is provided with a screw segment F threadedly connected to the other end of the threaded tube C. The thread rotation directions of the screw segment E and the screw segment F are opposite.

3. A construction method for the steel bridge bottom support adjustment assembly according to claim 2, characterized in that: The method includes the following steps: first, assembling support column A, support column B and inter-column reinforcement support together, and installing length adjustment device A, length adjustment device B and reinforcement connecting rod at the same time; through support column A and support column B, and supporting support column A and support column B on the support foundation on the ground, basic support for the first head beam part of the steel box bridge and the second head beam part of the steel box bridge unit is realized; by length adjustment device A and length adjustment device B, adjustment support for the first head beam part of the steel box bridge and the second head beam part of the steel box bridge is realized, thereby improving the installation efficiency of the combined cable-stayed steel box bridge.

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